Jeff Legwold and Lee Rasizer, of the Rocky Mountain News, report Denver Broncos RB Michael Pittman (neck) aggravated a neck stinger and was forced from the team's Week 9 game in the first quarter. Pittman had previously seen a specialist after suffering the injury in Week 7. "I don't know if I'm going to play next week or when I'm going to play. I'm very frustrated right now ... ," Pittman said. "I've just got to find out what's really wrong with me."